The Silurian in Maryland, US |
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Paleontology and geologyAfter a period of uplift and mountain building (the Taconic Orogeny) during the Ordovician, erosion and subsidence of the edge of the North American continent brought the return of a shallow sea to much of Maryland. Brachiopods flourished on the limy sea floor, as did trilobites and echinoderms. Palaeaspis, an early fish, swam in the waters above. |
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